S04E08: The Missing Teen

The Golden Time Team conducts a discreet operation to catch the user they believe to be Circus Man. Meanwhile, Eun Soo volunteers to transfer to the dispatch team. As they chase down Circus Man, a local high school teacher calls the 112 Call Center about his student who has gone missing after leaving an ominous voicemail.

Season 4

Lee Ha-na
Lee Ha-na
Kang Kwon-ju
Song Seung-heon
Song Seung-heon
Derek Jo
Son Eun-seo
Son Eun-seo
Park Eun-soo
Kang Seung-yoon
Kang Seung-yoon
Han Woo-joo
Kim Jung-ki
Kim Jung-ki
Park Joong-ki
Song Boo-gun
Song Boo-gun
Goo Gwang-soo
Baek Sung-hyun
Baek Sung-hyun
Shim Dae-sik
Kim Jae-uck
Kim Jae-uck
Mo Tae-gu